Loose-leaf-binder post.



E. J. OYSTON.

LOOSE LEAF BINDER POST.

APPLICATION FILED MAH. 31, 191?.

1,241,008, E Patem sept. 25, 1,91?.

OHG. Q l

s'rafrns rafrnnr ortica.

EDWARD J. OYS'ION, OF CHICAGO, ILLINOIS.

LOOSE-LEAE`BINDER POST.

Specification of Letters Patent.

Patented Sept. 25, 1917.

.Binder Posts, of which thefollowing is a specification.

My invention relates to improvements in loose leaf binding devices and more particularly to posts employed in devices of this character.

The object of my invention is the production of a loose leaf binding device which will be of durable and economical construction, one in which the posts will be of a sectional nature, permitting of ready and expeditious expansion or contraction of the same to accommodate any number of leaves, and in which, when a book has been completed, the posts may be readily and easily removed without disturbing the leaves or covers of the book, so as to permit of the insertion of fastening or sealing members of less cost.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing, forming a part of this specification, and in which,

Figure 1 is a perspective view of a loose leaf binder embodying the invention,

Fig. 2 is an enlarged section through one of the posts of the binder, and

Fig. 3 is a central section through one of the sections of the posts.

The preferred form of construction as illustrated in the drawings comprises posts, each of which is formed of a plurality of identical tubular sections 1. Each of said sections is formed with an externally threaded reduced lower end 2, the upper end there- 'of being of an internal diameter corresponding with that of the external diameter of the end 2, said upper end being provided with an internal thread 3. The opening or passage through each section l is reduced at its lower end and internally threaded as at 4.

The posts thus formed are designed for employment in connection with covers 5 and 6, said covers being provided at their rearward edges with elongated metallic bars 7 and 8, respectively, with which said covers are hingedly connected, as will be readily understood. The bar 8 is formed witn threaded openings 9 adaptedV for engagement by the lower end 2 of any one of the post sections l. The bar 7 is formed with openings 10 through which the upper ends of the posts loosely pass. Each post vis formed of as many sections as desired, the sections being readily and easily connected by threading the lower end 2 of one section into the upper end 3 of the next lower section. In this manner it will be seen that the posts may be made as long or short as desired to accommodate the number of sheets desired to be placed in the binder.

The upper cover of the binder is locked in position by means of caps 11 which are adapted to fit loosely over the upper ends of the uppermost post sections 1. Each cap is provided with a medial screw 12 which is adapted for engagement with the threads 4 in the lower end of the uppermost post section, the same being adapted to extend also into engagement with the threads t in the upper end of the lower section. Each cap is knurled as seen to facilitate manual rotation of the same, the telescoping of the cap with the upper end of the post permitting of adjustment of the cap into secure engagement with the detachable or upper cover of the binder. By extending the screw 12 the entire length of the upper section of the post and so as to engage with the threads 4: of the lower post section, said screw will serve `to reinforce the joint between the post sections, and thus aid in the production of a device possessing great strength and rigidity. To facilitate rotation of the post sections in attaching or detaching the same, lateral openings 13 are provided with which a key or pointed tool may be engaged, as will be readily understood.

By forming each section of each post of a tubular character, when a binder is completed and ready to be stored away, the caps l1 may be removed and a wire or other permanent sealing element may be inserted through each post. After a sealing member has thus been inserted through each post, the latter is detached bv unthreading the same from the bar 8, and slipping the post upwardly through the opening 10 in bar 7, thus completely detaching the same. After this has been done, the ends of the wire or sealing element are secured together, thus serving to efectually bind the loose leaves togetherwith a much cheaper form of construction and permitting the posts to be used in connection with another binder.- The tubular character of the post, it will thus be seen tends to economy which amounts' to considerable in large establishments where many records are keptiinloose leaf binders.

While I have illustrated and described the preferred form of construction for carrying my invention into effecgthi-s isfpcapable of vari-ation .and niodication withoutr departing from Lthe .spiritof the invention. I, therefore, do not wish .to .belimitedtoxthe precise details ofcon-struction set forth, but desire to, avail myself of such -variationsand modiicationsas come within the scope of the appended claims.

rHaving deScribed lmy invention what I claim as. new and desire to lsecure by Letters Pat-ent is:

lf In e lcoseleaf binding device, a post comprising a plurality of ytubular sections each having yits lower end reduced and threadedy the upper .end of zeahsection having a .threaded opening. adapted for engagement byfthe reduced "lower end ofthe next high-er section; `a cap adapted to engage loosely over the upper end of any one of said sections; and a medial screw on said cap, the lower end of the opening in each sectionbeingrednced and threaded for engagement by said screw, substantially as de* scribed.

'2. In a loose leaf bindingdevice, a post comprising a plurality of tubular "sections ing reducedz and threadedifor engagement by.

said screw, said screw being of :allength t0 adaptrthc same fori pas/,Sage entirely through one section into 'engagement with .the threads of lthe next ylower seetcn,-substantia1ly as described.

lIn testimony iwhereof I ehave, signed my name :toi thisfspecaton in the Y presencei of two subscribing `xivitnesses.

J OYSTON. Witnesses:

ARTHUR AfULSQN, JOSHUA 11R, Poms.

Copesvof thilsopatent maybe obtained for lfive cents each`py-addressing the Commissioner of ratents, Washington, D. C. 

